Add 40/45 and 1/80
40/45 + 1/80 is 649/720.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 80 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 45 × 16 = 720,
40/45 = 40 × 16/45 × 16 = 640/720 - Likewise, for the 2nd fraction, since 80 × 9 = 720,
1/80 = 1 × 9/80 × 9 = 9/720 - Add the two like fractions:
640/720 + 9/720 = 640 + 9/720 = 649/720 - So, 40/45 + 1/80 = 649/720
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